01 -
Place the Oreo cookies in a food processor and pulse into mostly fine crumbs with a few small chunks. You can also crush them in a sealed bag with a rolling pin. Set aside.
02 -
Whisk the instant chocolate pudding mix with the cold milk for about 2 minutes, until smooth and thickened. Refrigerate for 5 minutes while you make the cream cheese base.
03 -
In a large bowl, beat the softened cream cheese, softened butter, and powdered sugar until smooth, fluffy, and free of lumps.
04 -
Beat the thickened chocolate pudding into the cream cheese mixture until evenly combined. Fold in the thawed whipped topping with a spatula until no white streaks remain.
05 -
Spread half of the Oreo crumbs across the bottom of a 9x13-inch dish. Spoon the chocolate pudding filling over the crumbs and smooth it into an even layer.
06 -
Sprinkle the remaining Oreo crumbs over the top. Cover and refrigerate for at least 2 hours, or overnight for cleaner scoops.
07 -
Add gummy worms or candy decorations just before serving. Serve cold with a large spoon or cut into squares after a longer chill.